Seizures – The Basics
Types of Seizure
Attempts have been made to categorize all the types of seizures. One widely-recognized classification divides seizures according to the location of origin. There are basically two major types of seizures –partial seizure and generalized seizure.
Partial seizures come from localized areas of the brain. These are subdivided according to whether consciousness is affected or not affected by the seizure. If it is affected, it is a simple partial seizure; if the consciousness is altered during an episode of seizure, it is called a complex partial seizure.
Generalized seizures occur within larger areas of the brain and are categorized further by the effect these have on the body. It should be noted that all seizures under this category alter the consciousness of the person undergoing a seizure. These are further divided into several subtypes including tonic, clonic, tonic-clonic or grand mal, absence or petit mal, myoclonic, and atonic.
Another category of seizures is the secondary generalization type. This begins with a partial seizure that spreads throughout other areas of the brain. Rare types of epilepsy or recurrent seizure include West Syndrome, Lennox-Gastaut Syndrome and Status Epilepticus.
There are varieties of health conditions whose symptoms are identical or closely similar with those of epileptic seizure and therefore must be differentiated. Conditions like migraine, syncope or fainting, narcolepsy, and psychiatric and psychological disorders like anxiety are among the more notable ones.
Causes
There is a wide spectrum of brain abnormalities and dysfunctions that result in seizures although there are plenty of cases, around 35% of all seizure cases, whose causes are unidentifiable. These are called idiopathic seizures.
Some of the most common causes of seizures include: sleep deprivation, head injury, drug intoxication and drug toxicity, ingestion of normal doses of drugs that typically cause the decrease in seizure threshold, infection, disturbances in metabolism, fever, withdrawal from specific chemical substances such as drugs and alcohol, lesions in the brain, stroke, multiple sclerosis, and even fever. Exposure to certain traumatic events can also trigger a type of seizure known as psychogenic non-epileptic seizure.
Management
Management of seizure depends heavily on the type that is occurring. People suffering from an attack of generalized seizure should be protected from objects that could cause the person injury. Those having attacks of tonic-clonic seizure have characteristically violent, jerky movements. Any of these movements should not be suppressed. For those having an attack of epilepsy not longer than 5 minutes, medical assistance is not necessary. Otherwise, medical attention should be sought.
For all seizure attacks, persons nearby should place the patient on his side or in a recovery position.
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